I played a men's guest day at Onwentsia probably 20 years ago (pretty sure it was prior to the work done by Renaissance). It had been a brutally hot, dry summer, and those dry conditions had extended into the fall. I could not make a ball mark on an approach shot, even with a lofted club's approach, and the greens had to be three or four feet faster than the normally very fast greens there. The three guys from my office who were in the group couldn't play dead. I don't believe any of them had more than one or two two putt holes for the day.
I found the challenge of the greens to be exhausting. I recall that my caddie was very good, and I think I made a couple based upon his reads, but putting from above the hole was almost impossible.